ABSTRACT

We find that the object indicated by Fynbo et al. (GCN 5420) dimmed by 0.61 +- 0.06 mag between 6.69 and 8.93 hr after the GRB. This confirms that the object was indeed the optical afterglow of GRB 060807. Assuming
a power-law time dependence F(t) propto t^-alpha, the inferred decay index is quite steep: alpha = 1.9 +- 0.2.